Method and means of forming barrel tumblers



June 15 1926. 1,589,280

M. R- WILSON METHOD AND MEANS OF FORMING BARREL TUMBLERS Filed Nov. 22, 1924 2 Sheets-Sheet 1 June 15 1926. 1,589,280

M. R. WILSON METHOD AND MEANS OF FORMING BARREL TUMBLERS Filed Nov. 22, 1924 2 Sheets-Sheet 2 Fig, a2

'21 v M Mat/Tie BY m a M ATTORN EY Patented June 15, 1926.

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treason AND MEANS or FORMING must-remnants.

Appli'ati'on' filed November 22, 1524. 1 Serial m3. 751,495.

My invention has'for its object the shaping of a tumbler during the-process of its manufacture whereby the upperportlonsof the corneal form are rounded or given a curvature inwards so thatthe finish'e'd i then been transferred'tothe cups 5 and 6,

tumbler has a barrel shape; It is well known that this shapehas particular advantages transportation and handling and reduction in'liability to break- This turning over of the upper walls of the tumbler into the curved or barrel shape,

I -accomplish by rotating the tumbler and atthe sametime pressing against opposite sides oft he rotatingtumbler a'p'air'of'surfaces having in cross section the "desired shape of an element of the tumbler-walls. These surfaces are advancedwith respect to the tumbler axis while the-tumbler rotates and during the said advancement they exert an inward pressure against the tumbler wall.

It is tobe understood of course that this takes place during the time that-,the turn- 1 bl'er is at a high temperature and thfat the glass is therefore sufiici'ently jgflastio to take the new form under the pressure of the-said forming surfaces. By referring to the accompanying drawin'gs m invention will bemade lear. 4

In the drawings, Fi il'fsho'ws a portion of a carriage adaptedto support a plurality of tumblers in the intermediate stages 'of their finishingwi'th one at the tumblers and its spinningtable shown in cross sect'ion. I K

Fig. 2 is a partfsection and part pers'pectiveviewof a tumbler after it has been formed into thebar rel sh'apeand showing the relative position of the forming surfaces 'and 'their Operation at the latter portion of the forming step.

3 is a planof Fig.2..

Fig.4 is one *or the 'form'ings'urfaces of Fig. 2 is perspective and with a pro ected front view indicated by tlfeddttedfl'ines and a eri P t n ed pr e .seetiq i teftl surfa'cei to'fshoiv the prggressive curvathis.

on hoit ,A pair of x 1 r est been molded and thereby partially sha ed are indicated bythe numerals 1 and'Q. The

lower part of these molded tumblers have been properly shaped in the'mold-as shown at 3 "and 4 respectively. The tumblers have proper degree so that-the glass will flow 1111 der the pressureof my forming surfaces. A pair of surfaces having preferably plain or straight portions at 12 and 13- a're twisted in their-length to haven curvature at their eiids T4 15 res pectively, 'eorrespon'ding with the desired curvature o fthe up r'pertion ofthe finished tumbler;

At '16 is shown a tumbler in processor being fonned into the barrel shape and at- 17 is shown 's'uch a-tunibl'er having the finished barrel form. The forming surfaces cart-ted in any align ent-main;

mining-structure as for example thegr'od '18 carried in the supports 19 20, and, operated 21, whereby the sup-porting memberis carr-y'ing the planes 12; 1'4, and 13, 15, may be advanced from the dotted position 22 to the full line position v the "movement the tumbler is I rotating aboutit'saxis of symmetry, as inheated "by the arrow '23, and the forming surfaces are advanced in the direction and to the degree indicated by the arrow '24:.

It now be seen that, when the" tumbler 2 comes into the position Bend the farming surfaces are advanoed as; indicated by the arfow 24,"f while 1 the tumbler is sptnaih'g as indicated; by the anew-.23; glass me pr oper plastie oohdit ion-,-"tI-1e tuna-t "e of the refining garnets between-1 2 and I4 between 13 and '15 press inward "j'rtiengh summer stir-hide at stra a as; as es eemte tumblifi ti afhsfrietl t v thei i g .isbfi ly te etvaha 5w in-a'ny conventional; manner asby the handle tumbler ready to be formed as indicated by 2, is transferred into the position 16 ready for a repetition of the forming steps.

The twist or the curvature which is introduced into the forming surfaces 12, 14, and 13, 15, is indicated progressively by the cross sections 25, 26, 27, 28 and 29 of Fig. 4. The section at being relatively straight and conforming to the side of the upper portion of tumbler 2. The ultimate curvature as at 29 corresponds with the upper curvature of the finished barrelled tumbler as shown at 17. The intermediate sections 26, 2'7, 28, indicate the progressive curvature from the section 25 to the section 29 as the forming surface travels over the plastic surface.

Referring particularly to Fig. 5, showing a modification of the adaptation of my invention; a conventional glazing table is shown at 30 on which a plurality of tumblers 31, 32, 33, 34 and 35, which have been or are being glazed, as by flames projected against their upper edges while the tumblers are traveling about the circular path as indicated by the arrow 36 about the center 37 in the conventional way.

At 38 is shown an arm pivotally supported about the center 37 The parallel movable rod 41 is carried in the bearings 39 and 40 and is movable by the lever 42 in the same manner as the structure indicated in Fig. 2, whereby the forming surfaces 43, 44, may be advanced'by the movement of the handle member 42 in the radial direction shown by the arrow 45.

The tumbler at 33 is in the process of being barrelled and is being rotated in its supporting cup by any conventional means as indicated in Fig. 1 and during this rotation and while the table is moved, as shown by the arrow 36, the surfaces 43, and 44, are moved radially as shown by the arrow 45 forcing the upper surfaces of the exterior of the tumbler into the turned or barrelled shape. The upper edge being thus reduced in diameter as it proceeds from the position 33 to the position 34 as indicated by the edge 46. The forming surfaces have at such time moved from the full line position to the dotted position.

In order that the arm 38 should move synchronously with the table 30 while this barrelling process is proceeding, 1' provide the spring latch which successively engages notches corresponding with each tumbler, one of these notches is shown at 51 and frictionally holds the'a-rm 36 to move synchronously with the table while the forming operation is progressing. The latch 50' is held in the notch 51 during the time that the table moves the arm 38 from the full line to the dotted position, at which latter time the operator by pulling the arm in the directi n otthe arrow 55 shifts the pparat s from the dotted position back to the full line position. Notch 52 which has now arrived in the position of 51 will now be engaged by the said latch and the forming operation will then be repeated on tumbler 32.

Tumbler 34 which formerly occupied the position 33 will now be transferred to the position 35 as a finished tumbler.

A conventional stop is indicated at 56 by which the movement of the forming surfaces is arrested at the same point, thus assuring a standardization of the tumbler shapes.

In lieu of the movement of the forming surfaces by the lever and connections 42, their movement may be produced automatically as by the roller 61 rolling upon the cam position surface 60. During its travel from the full line to the dotted position,

the surfaces will be forced in the direction of the center 37, thus automatically barrelling the tumbler as the table 30 rotates in the direction 36. lVhen the roller arrives at its dotted position it rides free of the cam surface and may then be displacedtherefrom and returned to the full line position for a second operation. The spring 62 being under compression during the roller travel on the cam restores the surfaces to the full line position.

It is understood that the various steps in forming and finishing a tumbler, both before and after the barrelling, may be carried out in any conventional manner and form no part of my invention, and it will also be understood that while I have shown a pair of twisted surfaces having a straight line motion, other shapes of forming surfaces and other motions corresponding with such shapes may be given whereby the exterior surface of the conical tumbler may be compressed while it is rotating into a barrelled form without departing from the spirit of my invention and I desire to be understood as claiming all such variations.

I have found that where the tumblers are formed at a rapid rate as from three to ten a minute the forming surfaces become quite hot and the surfaces may be advantageously cooled-by a water cooling jacket against their outside surfaces. Also the said surfaces may be caused to move by a foot pedal or by connection with any automatic or power means. All such variations although not specifically shown and described, are within my inventive concept.

I claim:

1.. The process of shaping a glass tumbler which consists in rotating the heated tum bler about its axis of symmetry while mov ing the tumbler bodily in a given direction and presenting against the sides of the tum-- bler a plurality of-forming surfaces while also moving said surfaces bodily with the tumbler in said gi en direction.

2. In an apparatus for forming barrel shaped tumblers, means for rotating the tumblers about their axes of symmetry, a plurality of side forming surfaces, means I constructed and adapted to move said surfaces in a direction transversely past the axis of rotation substantially tangent to and also against the tumbler outer walls Whereby the said Walls are compressed into barrel shape.

3. In an apparatus for forming barrel shaped tumblers, means for rotating the tumblers about their axes of symmetry, a plurality of side forming surfaces, means constructed and adapted to move said. surfaces substantially tangent to and also against the tumbler outer Walls whereby the said Walls are compressed into a barrel shape, said surfaces having a flat shape where they first contact With the tumbler walls and a barrel shaped cross section where they finish their contact with the said walls.

4. In an apparatus for forming barrel shaped tumblers, means for rotating the tumblers about their axes of symmetry, a plurality of side forming surfaces, means constructed and adapted to move said surfaces substantially tangent to and also against the tumbler outer Walls whereby the said Walls are compressed into a barrel shaped tumblers, means for rotating the tumblers about their axes of symmetry, a plurality of side forming surfaces, means constructed andadapted to move said surfaces substantially tangent to and also against the tumbler outer walls whereby the saidwvalls are compressed into a barrel shape, said surfaces having a flat shape where they first contactwith the tumbler walls and a barrel shaped cross section Where they finish their contact with the said walls, a transfer carriage for a plurality of said tumblers and engaging meansadapted to enthe said surfaces to travel parallel with the transfer movement of the tumblers during the forming of the tumbler into the barrelled shape;

MILTON a. WILSON. 

